@media screen and (max-width: 48rem) {
  body {
    min-width: 18.75rem;
    min-height: 31vh;
  }
  .moNavBtnHide {
    display: none;
  }
  header {
    width: 100%;
    box-sizing: border-box;
  }
  header nav {
    box-sizing: border-box;
    width: 100%;
  }
  header .nav_box {
    width: 100%;
    box-sizing: border-box;
  }
  main {
    width: 100%;
    display: block;
    min-height: 22vh;
    box-sizing: border-box;
  }
  footer {
    width: 100%;
    box-sizing: border-box;
  }
  .activity_box {
    width: 100%;
  }
  .activity_details {
    width: 100%;
  }
  .activity_list {
    width: 90%;
    margin: 0 auto;
  }
  .activity_list h2 {
    width: 6.375rem;
    height: 0.875rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    font-size: 0.875rem;
    color: #333333;
    line-height: 0.875rem;
    margin-top: 1.25rem;
    margin-bottom: 0.625rem;
  }
  .activity_list .list_content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 0.625rem;
  }
  .activity_list .list_content .list_details {
    width: 45%;
    margin-top: 0.625rem;
    background-color: #fff;
  }
  .activity_list .list_content .list_details .div_img {
    width: 100%;
    height: 9.375rem;
    background: #02A0E7;
  }
  .activity_list .list_content .list_details div {
    box-sizing: border-box;
    padding: 0.875rem 0.6875rem 0.6875rem;
  }
  .activity_list .list_content .list_details div h6 {
    width: 100%;
    height: 0.75rem;
    font-family: SourceHanSansSC;
    font-weight: 500;
    font-size: 0.75rem;
    color: rgb(51, 51, 51);
    line-height: 0.75rem;
    margin-bottom: 0.3125rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .activity_list .list_content .list_details div p {
    width: 100%;
    height: 1.25rem;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 0.625rem;
    color: #666666;
    line-height: 0.625rem;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    -webkit-line-clamp: 2;
  }
  .activity_list .list_page {
    width: 18.75rem;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.625rem;
  }
  .activity_list .list_page span {
    width: 2.125rem;
    height: 1rem;
    background: #02A0E7;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 0.75rem;
    color: #FFFFFF;
    line-height: 1rem;
    text-align: center;
    border: 0.0625rem solid rgba(102, 102, 102, 0.1);
  }
  .activity_list .list_page span:last-child {
    color: #666666;
    background-color: rgba(102, 102, 102, 0);
  }
  .activity_list .list_page div {
    width: 1.375rem;
    height: 1rem;
    border: 0.0625rem solid #DCDCDC;
    text-align: center;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 0.625rem;
    color: #666666;
    line-height: 1rem;
  }
  .activity_list .list_page div img {
    width: 0.375rem;
    height: 10 px;
  }
  .activity_list .list_page div:nth-child(2) {
    width: 1.5rem;
    text-align: center;
    height: 1rem;
  }
  .activity_list .list_page div:nth-child(2) img {
    margin-top: 0.1563rem;
  }
  .activity_list .list_page div:nth-last-child(2) {
    width: 1.5rem;
    height: 1rem;
  }
  .activity_list .list_page div:nth-last-child(2) img {
    margin-top: 0.1563rem;
  }
}
@media screen and (min-width: 48.0625rem) {
  body {
    min-width: 75.0625rem;
  }
  main {
    width: 100%;
    height: 100%;
    min-height: 21vh;
  }
  .activity_box {
    width: 100%;
    margin: 0 auto;
    background: rgba(102, 102, 102, 0.1);
  }
  .activity_details {
    width: 100%;
  }
  .activity_list {
    width: 62.6%;
    margin: 0 auto;
  }
  .activity_list h2 {
    width: 6.375rem;
    height: 1.5rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    font-size: 1.5rem;
    color: #333333;
    line-height: 1.8125rem;
    padding-top: 3.0625rem;
    margin-bottom: 1.875rem;
  }
  .activity_list .list_content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 5rem;
  }
  .activity_list .list_content .list_details {
    width: 31%;
    margin-top: 1.25rem;
    background-color: #fff;
  }
  .activity_list .list_content .list_details .div_img {
    width: 100%;
    height: 14.1875rem;
    background: #02A0E7;
  }
  .activity_list .list_content .list_details div {
    box-sizing: border-box;
    padding: 1.75rem 1.375rem 1.3125rem;
  }
  .activity_list .list_content .list_details div h6 {
    width: 100%;
    height: 1.125rem;
    font-family: SourceHanSansSC;
    font-weight: 500;
    font-size: 1.125rem;
    color: rgb(51, 51, 51);
    line-height: 1.3125rem;
    margin-bottom: 0.625rem;
  }
  .activity_list .list_content .list_details div p {
    width: 100%;
    height: 2.5rem;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 0.875rem;
    color: #666666;
    line-height: 1.25rem;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    -webkit-line-clamp: 2;
  }
  .activity_list .list_page {
    width: 28.5rem;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    padding-bottom: 5rem;
  }
  .activity_list .list_page span {
    width: 4.25rem;
    height: 2.1875rem;
    background: #02A0E7;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 1rem;
    color: #FFFFFF;
    line-height: 2.1875rem;
    text-align: center;
    border: 0.0625rem solid rgba(102, 102, 102, 0.1);
  }
  .activity_list .list_page span:last-child {
    color: #666666;
    background-color: rgba(102, 102, 102, 0);
  }
  .activity_list .list_page div {
    width: 2.3125rem;
    height: 2.1875rem;
    border: 0.0625rem solid #DCDCDC;
    text-align: center;
    font-family: SourceHanSansSC;
    font-weight: 300;
    font-size: 1rem;
    color: #666666;
    line-height: 2.1875rem;
  }
  .activity_list .list_page div img {
    width: 0.5625rem;
    height: 0.9375rem;
  }
  .activity_list .list_page div:nth-child(2) {
    width: 2.5625rem;
    height: 2.1875rem;
  }
  .activity_list .list_page div:last-child(2) {
    width: 2.5625rem;
    height: 2.1875rem;
  }
}